Mount Sumbing is an active stratovolcano in Central Java, Indonesia. This volcano is symmetrical like its neighbor, Mount Sindoro which lies to its northwest. Administratively, The volcano is divided between 3 regencies: Temanggung, Wonosobo, and Magelang. The only report of historical eruptions is from 1730. It has created a small phreatic crater at the s…Mount Sumbing is an active stratovolcano in Central Java, Indonesia. This volcano is symmetrical like its neighbor, Mount Sindoro which lies to its northwest. Administratively, The volcano is divided between 3 regencies: Temanggung, Wonosobo, and Magelang. The only report of historical eruptions is from 1730. It has created a small phreatic crater at the summit.